54t - 11/36
XX rd.
Chainkeeper is only slightly lighter than the sram red fd I used back in the dark, dark days of 2x10.

Incidentally, did any of you know that the plates of a 2011 sram red fd can be cut into teeny tiny little pieces with school scissors?

The 2012 "yaw" fd is a little stockier. It would at least require office grade shears.